patch "iio: adc: ti-ads1015: fix conversion when CONFIG_PM is not set" added to staging-linus

This is a note to let you know that I've just added the patch titled

iio: adc: ti-ads1015: fix conversion when CONFIG_PM is not set

to my staging git tree which can be found at
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging.git
in the staging-linus branch.

The patch will show up in the next release of the linux-next tree (usually sometime within the next 24 hours during the week.)

The patch will hopefully also be merged in Linus's tree for the next -rc kernel release.

If you have any questions about this process, please let me know.

From e71e6dbe96ac80ac2aebe71a6a942e7bd60e7596 Mon Sep 17 00:00:00 2001
From: Maxim Kochetkov <[email protected]>
Date: Mon, 3 Aug 2020 08:04:05 +0300
Subject: iio: adc: ti-ads1015: fix conversion when CONFIG_PM is not set

To stop conversion ads1015_set_power_state() function call unimplemented function __pm_runtime_suspend() from pm_runtime_put_autosuspend() if CONFIG_PM is not set.
In case of CONFIG_PM is not set: __pm_runtime_suspend() returns -ENOSYS, so ads1015_read_raw() failed because ads1015_set_power_state() returns an error.

If CONFIG_PM is disabled, there is no need to start/stop conversion. Fix it by adding return 0 function variant if CONFIG_PM is not set.

---
 drivers/iio/adc/ti-ads1015.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

index f42ab112986e..9fef39bcf997 100644
@@ -316,6 +316,7 @@ static const struct iio_chan_spec ads1115_channels[] = {
 	IIO_CHAN_SOFT_TIMESTAMP(ADS1015_TIMESTAMP),
 };
 
+#ifdef CONFIG_PM
 static int ads1015_set_power_state(struct ads1015_data *data, bool on)
 {
 	int ret;

@@ -333,6 +334,15 @@ static int ads1015_set_power_state(struct ads1015_data *data, bool on)
 	return ret < 0 ? ret : 0;
 }
 
+#else /* !CONFIG_PM */
+
+static int ads1015_set_power_state(struct ads1015_data *data, bool on)
+{
+	return 0;
+}
+
+#endif /* !CONFIG_PM */
+
 static
 int ads1015_get_adc_result(struct ads1015_data *data, int chan, int *val)
 {

2.28.0